Automatically clamping work supporting stand



Aug. 5, 1952 r v, TRACY 7 2,605,795

AUTOMATICALLY CLAMPING WORK SUPPORTING STAND Filed March 11, 1950 ZSHEETS SI-IEET 1 -INVENTOR m MearZ U. Tracy BY MM ATTORNEYS Aug. 5, 1952 M. v. TRACY 2,605,795

. AUTOMATICALLY CLAMPING WORK SUPPORTING STAND Filed March 11, 1950 2 SHEETSSHEET 2 m INVENTOR F J v M earl U. Tiraay I I Wi/ T j a M ATTORNEYS Patented Aug. 5, 19 52 UNITED STATES E:

UTQMATICAL WQ K;

scrroa'rmersranp :Mearljt. Traomiea adenaiCalif assignonoii'fifiy: f per ent qMait m nac e l sadeaa I p Application-March 11, 1959; Serial (o1; amazes) 3Q a ms 1,

This invention-is directed to, and it. is an ob- J'ect to provide, a ..novel workholding. :clamp adapted to -rest on the floor and toclampingly engage and-support panel-like materialin a vertically edgewise position ior-read-yand conven-. ient working thereon.

While especially designedforiuse to c1ampi-ngly engage and support doors, screens, sash, or the -1ike',-the-device may be used-effectively withmany other-materialswhichrequireother thanmanual:

snpportforthe most. convenient positioningior Work-thereon;

' Another-object of the invention is i to provide a- Work-holding clam-p which; when engagedwith -a door or the like; holdsthe same vertically edge wise in a laterally stable,- longitudinallynon-slidable position for-Workthereon, asforexamplefor planing;sawingto-dimension, etc.-

A further-object of the invention is to-previde awprk=holding f clam-pwhich acts, underthe influen'ce of the- Weight-of the Work; to clampthe latter-in the desired-position;

An additional object of the'dnventionis to pro vide; a, 'work holdingc-lamp -WhiGh-fiS relatively "light weight,- non-bulky; and-manually -portab1e,

cinitiallycandpart y. inserted into :the clam Fi 2gisan. elevation. of. theeclampin..=fl 111;sup- .gportingengagementwith. a door,

Fig. 3 1s a fragmen ary transverse ction, :on

Fig. 4 is a fragmentary sectional plan view showing particularly one of the adjustment screw units; the view being taken on line 4--4 of Fig. 2;

Referring now more particularly to the characters of reference on the drawings, the device includes a base which comprises a pair of horizontal, elongated guide bars I' disposed in adjacent but transversely spaced parallel relationship; said guide bars I being tubular, and havm tie boltsflz; which eitena therethreugh tie-"bolts 2 securii1g; the guide eare to shaped foot 3-at-each"end"'of-the device A pair of spaced upstanding-slide irames lyof generally invejrtedy v -sh'ape, are mountd on the guide bars P ior sliding mean thereon in QreIai e me i spr epa n r le nzk e slide frames 4--'being 'double f acedi-and having eateri u war ly wh ch theuid Jeers i ie ie et ab g elat on, A

The outer end" flanges 5 -oj f each slide' frame 4 YPIQ'J FQF n id. tnes h e av a ss ar fise if hereb i eaianfl adjustment: screw 1 is threaded th tween. hes' ida't amee l mpelled vnairoff-paralle s w ne the ame -u isfiabl -q shi eeadsyt t 5 e held-in place by a :th ou hat i el rps lbar ans ext liddcn w l WW3 d t nd n p r i n. q i h gadr armor. ba 2 ga n By.-adiu mea =h.screw th outward limit of motion of each slide frame eregulat d-I r A a r o f 1qstand n qstslflaat ,dispssed tion; saidpos s s term na in at h o d t n aab veiha ide bar 18, is connected to the cor sponding'sli any, vertically G e. p ,ot a 1y .at'tac allei links. .1' tweena rai ed lat ,l outwa dly 1 pos tion. and; ai wer dg a e all f; v ed=1?asijt 'qn,v a slnj E1 ;.;1,a .spectively. This accomplished'flo the ea n t a each setnna a le inks! nd amenpward; nd-in an l ncline ii of pix om connection with the rel frame. 4-.

atensipn prin =1 9 1 8v o heir a r QiediQosi-tmn Ea h 129 t face, with a pair of vertical that they oppose each othe in sets.

A pair of transverse, lapping rods l5 extend between the posts 8 at the lower ends of the latter, one rod being afiixed to one post and the other rod being afi'ixed to the other post, and such rods being of a length that they remain in lapping relation irrespective of the spacing between the posts 8.

Such lapping rods l5 pass, at a point between bottom of the CLtPJ may Y workingthereon; ..ment of :the cushion pads H with opposite sides f the platform lowers, v Iregulated to alter the initial spacing of the slide "frames 4.

"above the adjacent lower linkfrom swinging upwardly and thus maintaining thedevice ina work clamping position.

ily seen that there vice as substantially fulfills the objects of the invention as set the posts 8, through a ring [6 fixed to the bottom of a rockable platform 11 which extends lengthwise through the device intermediate the upstanding slide frames 4 When the above described device is in use it rests upon the floor, and the slide frames 4 are separated to the maximum limit which the adjustment screws 'l'permit; the springs l initially holdingthe posts 8 in raised, laterally outwardly retracted position, as in Fig. 1. Thereafter, the

work, here shown as a door [8, is lowered, verti-.

..erallyinwardly advanced position, positively clampingthe cushionpads ll against opposite sides of saidrworkt.

Q, Thereafter, the work is effectively clamped and ,supported in a vertically edgewise position for the positive frictional engageof v.the work not only preventing any lateral fteeteri ng of said work, but preventing longitudinal sliding thereofon the platform H, the latter being rockable in order to matchingly engage the lower edge of the work. In order to compensate for work of different thickness and to assure that thecushion pads H positively engagethe work on opposite sides when the adjustment screws 1 are ,Under certain conditions it may be desirable :to lock the device in a work clamping position,

and to this end one of the slide frames 4 is V formed with a row'of holes 19 which extend upwardly along the inner edge of said frame. After 1 the posts 8, together with the parallel links 9,. are lowered "to work clamping position, across pin (not shown) is inserted through the hole l9 next link 9, preventing said "The bars 1 instead of being tubular, may be of solid stock; in which case feet 3 are secured to the bars by cap screws rather than continuous tie bolts. Y

The device may also be used as a dolly, if desired, by merely mounting the feet 3 on casters.

y The described'work holding clamp provides a very practical and readily manually portable deice for the intended purpose, and when in use maintains the work in a most convenient and accessible position.

From the foregoing description it will be readhas been produced such a depresent and preferred 'construction of the device,

7 still in practice such deviations from such detail may be resorted to as do not form a departure from the spirit of the invention, as defined by the appended claims.

Having thus described the invention, the following is claimed as new and useful, and upon which Letters Patent are desired:.

1. A work supporting clamp comprising a base, a pair of spaced upstanding frames on the base, a pair of spaced upright posts between the frames, means connecting the posts and corresponding frames for movement of the posts between a raised laterally retracted position and a lowered laterally advanced position, means mounting the frames on the base for horizontal adjustment of the frames relative to each other whereby to alter the initial spacing of the posts from each other, work engaging elements on the opposing faces of the posts, an elongated work engaging platform extending between the posts at their lower ends and in a direction parallel to the. opposing faces of said posts, and means sup- ,relative to the posts.

2. A work supporting clamp comprising a base, a pair of spaced upstanding frames on the base, a pair of spaced upright posts between tne frames, means connecting the posts and corresponding frames for movement of theposts between a raised laterally retracted position and a lowered laterally advanced position, means mounting the frames on the base for horizontal adjustment of the frames relative to each other whereby to alter the initial spacing ofthe posts from each other, work engaging elements on the adjacent faces of the posts, adjacent and horizontally parallel members both spanning the gap between the posts adjacent and below their lower ends, one member being securedon one post and the other member being secured on the other 'members, and a sleeve fixed on the post, a work supporting platform above the underside of the platform and slidably receiving both members therethrough.

8. A device as in claim 2 in which the horizontally parallel members are circular in cross section to permit the sleeve to rock about them;

.the platform being elongated in a direction at rocking.

right angles to the axis of MEARL V. TRACY.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 2,436,941 Sendoykas Mar. 2,1948 

